Harriet Lane Handbook
- Warm autoimmune hemolytic anemia
- Water deficits, free
- Wheal
- Whipworm
- Whole blood
- Whole bowel irrigation
- Whole exome sequencing (WES)
- Whole genome sequencing (WGS)
- WHO Solution
- Wilcoxon matched pairs test
- Willebrand disease, desmopressin acetate for
- Williams syndrome
- Wilms tumor
- Withdrawal, opioid, signs and symptoms of
- Wolff-Parkinson-White (WPW)
- Wong-Baker FACES pain rating scale
- World Health Organization (WHO), growth charts and
- World Professional Association for Transgender Health (WPATH)
- Wound dressing, for burn
- Wound irrigation